Apparatus for depositing layers of glass on glass articles.



PATENTED JULY l 1905.

H. A. SGHNBLBAOH. APPARATUS FOR DEPOSITING LAYERS DP GLASS 0N GLASS ARTIOLB$.

APPLICATION FILED JULY 8. 1904 2 SEEETS-SHEET L.

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No. 798.684. PATENTED JULY 4. 1905, EL A. OElIELBAGH.

APPARATUSFQR DIZPUSH'ENPI LAYERS OF GLASS 0N GLASS ARTIGLUS At? LU 3110] FILED JULY 8. 1904 2 SHEETS-S13E31: 2

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Z @armwv I UNITED STATES Patented July 4, 1905.

PATENT OFFICE.

HARRY A. SOHNELBACH, OF CHARLEROI. PENNSYLVANIA, ASSIGNOR TO MAOBETH-EVANS GLASS COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA. V

APPARATUS FOR DEPOSITlNG LAYERS OF GLASS N GLASS ARTICLES.

SPECIFICATION forming part Of Letters Patent No. 793,684, dated July 4, 1905.

Application filed July 8, 1904- Serial No. 215,744.

To all whom it may concern:

Be it known that I, HARRY A. SoHNEL- BACH, a resident of Charleroi, in the county of Washington and State of Pennsylvania, have invented a new and useful Improvement in Apparatus for Depositing Layers of Glass on Glass Articles; and I do hereby declare the following to be a full, clear, and exact description thereof. to My invention relates to apparatus for depositing a layer of glass on glass articles, and such as maybe employed in carrying out a certain process for same for which I filed an application for Letters Patent of the United [5 States on the 8th day of July, 1904, Serial In the manufacture of lenses for railroad lanterns and signals, for instance, it is cus tomary, according to the present practice generally employed, to first press the lens in a suitable mold. The lens is then placed in the bottom of a mold in a horizontal position with the face to be coated exposed, and a mass of glass of the color desired is inserted 2 5 in said mold on the end of a pipe, whereupon the glass so introduced is blown so as to fill the mold-cavity and deposit upon the exposed face of the lens a thin layer of glass, which adheres to and becomes part of said 0 lens. By this operation but one lens is finished at a time and only a small portion of the glass blown within the mold can be utilizednamely,.that portion deposited on the lensthe remaining portion being wasted.

5 The object of my invention is to provide for the de osition of the glass upon two or more artic es at one operation of blowing, thereby utilizing more of the blown glass and greatly reducing the time and labor in the manufacture of such articles.

To these ends my invention comprises, generally stated, a mold or like receptacle with non-recessed inner walls, means for supporting two or more articles therein on said non-recessed walls with their faces to be coated exposed, and means for introducing and expanding a body of glass within said mold, whereby a layer of glass is deposited on the exposed faces of said articles.

To enable others skilled in the art to make and use my invention, I will describe the same more fully, referring to the accompanying drawings, in whic Figure 1 is a side elevation of the mold.

Fig. 2 is a plan vlew showing the mold closed. 5 5 Fig. 3 is a rear view of the mold closed, and Fig. 4 is a front view of the mold open and partly in section tilted or turned to receive the articles. Fig. 5 is a section on the line 5 5, Fig. 2. Fig. 6 is a section on the line 6 6, Fi 1.

Like numerals indicate like parts in each View.

The numeral 2 designates a suitable base or support carried by the feet 3. In the rear of the base 2 is the standard 4, which may be secured in place by the nut 5, the enlargement 6 on said standard forming a shoulder 7, resting upon the base 2. Hinged upon the standard 4 are the hinge members 8 and 9 of the partible mold 10. The mold sections 11 and 12 are connected to the hinges 8 and 9, respectively, by means of the bolts or pins 14, said bolts passing through openings in said hinges and the threaded ends of said bolts screwing into threaded seats 14 in the mold-sections 11 and 12. By this construction the mold-sections 11 and 12 are hinged so as to swing upon the standard 4, while at the same time they are swiveled to the hinge members, so that they are capable of being tilted or turned over into a horizontal position, as indicated in Fig. 6.

Secured to the front of the mold-sections 11 and 12 are the handles by means of which the said sections are operated.

Secured within the mold-sections 11 and 12 are the supports 16, which consist of disks of asbestos or other suitable material, secured in place by means of the bolts 17 and nuts 18. 0 A Washer or plate 19 may be employed. The shape or form of these supports 16 may be changed to suit the article to be supported thereby; but as my invention will be illustrated in connection with the manufacture of lenses the support illustrated is adapted for that particular purpose.

In the employment of my invention the lenses 20, having been previously pressed in a suitable mold, are circular in form, with the circular recess or depression 21 upon their inner faces, the outer faces 22 of said lenses being slightly convex. For the purpose of introducing the lenses to the mold and adjusting them on the supports 16 the moldsections are thrown open, and by turning the handles 15 said mold-sections are tilted into the horizontal position indicated in Fig. 4. The lenses are then placed upon the supports 16. As these supports are preferably formed of asbestos, which is of a pliable nature, said supports may be made to form a tight fit with the depression 21 of the lens, so that some pressure is required to make said lens engage said support, and as a consequence there is less liability of said lens being displaced when the mold-sections are raised to a substantially vertical position. The moldsections are then swung toward each other, while at the same time the operator by slightly turning the handles 15 brings the mold-sections up into the position indicated in Fig. 3. Before bringing the mold-sections up into an entirely-closed or vertical position the blower inserts a body of glass carried on the end of a suitable pipe of the color desired to be deposited upon the lenses and proceeds to blow the glass within the mold. As stated, the mold is not entirely closed or the moldsections brought to a vertical'position, but are held at a slight angle, as indicated in d'otted lines, Fig. 3, so as to'retain the lenses in position upon the support 16, for it is apparent that if the mold-sections were brought up to a vertical position there would be danger of the lenses slipping from their supports. This holding of the mold-sections slightly apart at their upper ends is made possible by leaving a slight space 24 between the bottom of said mold-sections and the base, together with a certain amount of play in the bolts or pins 14. However, as soon as the blower has blown the glass sufliciently so that the bulb formed thereby touches the faces of the lenses the mold-sections are then completely closed, for the lenses will then be held in position by the bulb of glass in contact therewith. The blower then continues to blow until the glass has been blown to fill the mold-cavity and cover the exposed faces of the lenses. The bottom of the bulbous form blown in this way will rest within thedepression or recess 25, formed in the base 2, so that when the mold is opened upon the completion of the operation the blown glass will adhere to this recess 25 and will separate itself from the mold-sections. In opening the mold the sections are first swung apart and then tilted to the horizontal position indicated in Fig. 4, whereupon the finished lenses may be readily removed and others introduced. By having the lenses supported in this manner, so that instead of fitting in recesses in the walls of the mold they are supported so that they project beyond the walls of the mold, the edges are at a distance from the walls of the mold, and as a consequence when the glass is blown these edges are coated with glass, so that when the blank blown within the mold is separated from the lenses the fracture will not occur right at the place where the outer face of the lens merges with the edge, but will occur at the rear edge, so that there will be nothing to mar the outer surface of the lens.

By my invention it is possible to form two or more lenses at one operation of blowing, for it is apparent that such modifications or changes may be made as to permit of the supporting of more than two articles, if desired, within the same mold. A greater portion of the glass blown within the mold is utilized, so that by the employment of my invention there is a great saving in time, labor, and material.

What I claim is 1. In apparatus for depositing a layer of glass on glass articles, the combination of a mold or like receptacle with non-recessed inner walls, means for supporting two or more articles within said mold upon said non-recessed walls with their outer faces exposed within the mold, and means for blowing a body of glass within said mold.

2. In apparatus for depositing a layer of glass on glass articles, the combination of a mold or like receptacle with non-recessed walls, means for supporting a glass article in an upright, or substantially upright, position on the non-recessed walls of said mold with its outer face to be coatedexposed within the mold, and means for blowing a body of glass within said mold.

3. In apparatus for depositing a layer of glass on articles of glassware, the combination of a mold or like receptacle with non-recessed walls, means for supporting articles of glassware on said non-recessed walls at o posite points in said mold with their outer aces exposed within the mold, and meansfor blowing a body of glass within said mold.

4. In apparatus for depositing a layer of glass on glass articles, the combination of a partible mold, means for supporting articles of glassware therein, and means for tilting said mold-sections.

5. In apparatus for depositing a layer of glass on glass articles, the combination of a partible mold comprising two sections, means for supporting articles of glassware therein, and means for tilting said mold-sections.

6. In apparatus for depositing a layer of glass on glass articles, the combination of a suitable support, hinge members, mold-sec tions secured to said hinge members and swiveled thereto, and means for supporting articles of glassware therein.

7. In apparatus for depositing a layer of glass on glass articles, the combination of a suitable support, hinge members, mold-sections, swiveling pins connecting mold-sections to said hinge members, and means for supporting articles of glassware therein.

8. In apparatus for depositing a layer of glass on glass articles, the combination of a suitable support, hinge members, mold-sections, threaded bolts on said hinge members engaging threaded seats in said mold-sections, and means for supporting articles of glassware therein.

9. In apparatus for depositing a layer of glass on glass articles, the combination of a mold, and a non-combustible pliable disk within said mold adapted to support the article to be coated.

10. In apparatus for depositing a layer of glass on glass articles, the combination of a mold, and a disk of asbestos supported within said mold adapted to support the article to be coated.

In testimony whereof I, the said HARRY A. SoHNELBAoH, have hereunto set my hand.

HARRY A. SCHNELBAOH.

Witnesses:

EMMA VERNON, A. N. I-IEPLER. 

